Last month’s standoff between President Poroshenko and now-ex-governor Kolomoisky

Good because it’s probably anti-oligarch.
Bad because Kolomoisky was very anti-Russian and this creates a power vacuum.

Last month, Kolomoisky’s people armed themselves and seized some offices of Ukrnaftogas which owes money to Kolomoisky’s gigantic bank — Privat Bank.

See the Bloomberg article for details.

Poroshenko assumes responsibility for Dnipropetrovsk region after Kolomoiskiy’s resignation